<!DOCTYPE html>
<html lang="zh">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title></title>
</head>
<body>
 <form action="http://localhost:9999/login" method="post">
   账户 <input type="text" name="username" id="username" value="" /><br>
   密码 <input type="password" name="password" id="password" value="" />
   <input type="submit" value="submit"/>
 </form> 
</body>
</html>